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Piezoelectric generator based on torsional modes for power harvesting from angular vibrations

Abstract

Torsional vibration of a circular piezoelectric shell of polarized ceramics mounted on a rotationally vibrating base is analyzed. The shell is properly electroded and connected to a circuit such that an electric output is generated. The structure analyzed represents a piezoelectric generator for converting mechanical energy from angular vibrations to electrical energy. Analytical expressions and numerical results for the output voltage, current, power, efficiency and power density are given.

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Correspondence to Hu Yuan-tai.

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Communicated by WANG Biao

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Chen, Zg., Hu, Yt. & Yang, Js. Piezoelectric generator based on torsional modes for power harvesting from angular vibrations. Appl Math Mech 28, 779–784 (2007). https://doi.org/10.1007/s10483-007-0608-y

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  • DOI: https://doi.org/10.1007/s10483-007-0608-y

Key words

  • piezoelectric generator
  • torsional vibration
  • power harvesting
  • efficiency

Chinese Library Classification

  • O343.8

2000 Mathematics Subject Classification

  • 74B20